 /*******************************************************************************
  * Copyright (c) 2004, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.core.internal.registry;

 import org.eclipse.core.runtime.*;

 /**
  * This is the copy of the ExtensionHandle minus the getDeclaringPluginDescriptor()
  * method that was moved into compatibility plugin.
  *
  * This class should not be used directly. Use ExtensionHandle instead.
  *
  * @since org.eclipse.equinox.registry 3.2
  */
 public class BaseExtensionHandle extends Handle implements IExtension {

     public BaseExtensionHandle(IObjectManager objectManager, int id) {
         super(objectManager, id);
     }

     protected Extension getExtension() {
         return (Extension) objectManager.getObject(getId(), RegistryObjectManager.EXTENSION);
     }

     protected boolean shouldPersist() {
         return getExtension().shouldPersist();
     }

     // Method left for backward compatiblity only
 public String getNamespace() {
         return getContributor().getName();
     }

     public String getNamespaceIdentifier() {
         return getExtension().getNamespaceIdentifier();
     }

     public IContributor getContributor() {
         return getExtension().getContributor();
     }
     
     String getContributorId() {
         return getExtension().getContributorId();
     }

     public String getExtensionPointUniqueIdentifier() {
         return getExtension().getExtensionPointIdentifier();
     }

     public String getLabel() {
         return getExtension().getLabel();
     }

     public String getSimpleIdentifier() {
         return getExtension().getSimpleIdentifier();
     }

     public String getUniqueIdentifier() {
         return getExtension().getUniqueIdentifier();
     }

     public IConfigurationElement[] getConfigurationElements() {
         return (IConfigurationElement[]) objectManager.getHandles(getExtension().getRawChildren(), RegistryObjectManager.CONFIGURATION_ELEMENT);
     }

     RegistryObject getObject() {
         return getExtension();
     }

     public boolean isValid() {
         try {
             getExtension();
         } catch (InvalidRegistryObjectException e) {
             return false;
         }
         return true;
     }
 }

